It would be the MS3 RMM. Are you sure the 2.3 is the correct mount?? I thought it was the 2.0 that was the turbo motor. I know its typically the skyactiv motor but it makes sense if they use the old 2.3 from the first gen for the turbo motor.

The MS3 used a 2.3 L DISI engine (Direct Injection Spark Ignition), with a turbocharger. The standard MZ3 uses either a base 2.0 L i4 port injected engine like the older generation Duratec, the 2.5 L MZR, or the 2.0 L SkyActiv engine. Only the Focus ST uses a 2.0 L turbocharged engine.